There's a restaurant 18 miles from the Oregon coast that has a logging museum and a yard full of old logging equipment. I found a couple of flatheads, including a stationary power supply of some kind, and a rusted out truck that is heavily modified. There is a boom on the back, so perhaps was used to tow logs out of the woods, though it looks a little light weight for that job. At some point they added a whole subframe to the front which had a Caddy flathead. They ran the caddy through a driveshaft connected to the gutted Ford Flathead. I guess that's one way to swap motors